Shoring



0. J. WESTMAN.

SHORING.

APPLICATION FILED JAN. is, 1918.

1,330,290. Patented Feb. 10,1920

5 ==pa1 e11 fromv the follo ing description. take floors and ceilings..15.

OLAF JOEL wEsrMeor LiNooLN, NEBRASKA.

snonme.

Specification of Letters Patent. Patented Feb. 1920.

Application filed January 16} 1918, Serial No. 212,013.

To all whom it may concern:

Be it known that I, OLAF JOEL WESTMAN, citizen of the United States,residing at Lin- 00111, in the county of Lancaster and State ofNebraska, have invented acertain new and useful Improvement in shoring,of which the following is afull, clear, concise, and eX- actdescription.

a 1 1 This invention relates to improvements-in adjustable and portable.trestles andniore particularly to a'combination trestleQand scaffoldsupport adapted primarily'for use as shoring in the construction ofconcrete It 's well known that in the construction j of concrete floodsand ceilings it is necessary completed, I by hammering,1 muchjarring tothe building and particu-t larly to the floors betweenwh-ichthe'supports were erected.

I to provide somemeans for temporarily supportingthe molds duringthepouring and setting of the concrete; Heretofore, it has been commonpractice to provide T-shaped supports at various intervals beneath themolds for this purpose.- These supports were-rigidly constructed ofheavy lumber,

but owing tothe fact that distances between floors and ceilings vary indifferent buildings, the supports were not of universal applic ation andoftentimes had to be either shortened or replaced by new ones ofdifferent dimensions when different fioo'r spacings were encountered,either n the same build,- ing or m the erection .of'oth'ers." Thisresulted in the loss of much valuable lumber and also necessitated theexpenditure of time and money in the construction of'new: supports.Furthermore, these posts or supports were removed, after the' fioor orceiling had been which caused Ogne object of the present invention,there fore, is to provide a device, of the character whereby thetrestles or supports may be described, which will effectively overcomethesevanous disadvantages and one which J will be of universalapplication, simple in ,construction andope'r'ation and economical tomanufacture 1 Another objectz'is the provision ofmeans readily andquickly removed after the floors or ceilings have set,'w'ithout'hammering them or-in any other'nianner causing the said floorsor ceilings to be arred or otherwise subjected to strain andpossibleinjury."

Other objects and advantages will beapuprights, 15

jith p ac y of various types.

, in connection with the accompanying drawings wherein the preferredembodiment of I the invention is illustrated. p

Figure 1 is a front elevation of the trestle illustrating the sameinoperative position,

Fig. 2 is a side elevation, and v F g. 3 1s a section taken on l neReferring more in detail to the drawings, i v

the device is shown as comprising a rectangular frame 10 preferablyconstructed of vertical members 11 and horizontalmembers 5' 12, saidframe'beingreinforced by aplurality of braces 13.- Adjustably secur edbymeans of clamps let to the vertical members '11 of the frame 10 areuprights 15. The

clamps 14 comprise substantially Lleshapedg brackets 16 which embracethe adjustablef uprights 15, one end of each of said ;U shaped brackets16 being secured by means of a bolt 17 toone face of the vertical meIn-.here 11 ofthe framelO. On the opposite face form a part of the clamps14, are secured by means of the same bolts (17) which hold the shortpieces 18 extending beyond the sides of the frame-10, substantially asshowmand providingmeans for the reception of the ends of the bolts 19which are -c arried by the corresponding ends of the U-shaped brackets16 and which serve as'means whereby said brackets may befirmly clampedabout the tohold them in their adjusted I positions. i

.Fremthis it will benoted that by merely loOSQning the bolts 19 of, theclamps 14; {that the adjustable uprights 15 may be, moved up or downrelatively to the frame 10 so as to provide for various, floor spacings.In this manner, the trestle may be adjustedto various heights and,therefore, [is of univerr .sal application for purposes of floor andcellof the frame, short straight pieces 18 ,which 0 V ii-shaped bracketsl6-to the members 11, said ing shoring. On. the other hand, if it isdesired-to remove the.adjustable-uprights 15 from the frame 10 this maybe accomplished by merely removingthe b olts;17. In .this manner, theadjustable uprights 15 are released from the frame 10; substantially asshown in; dotted line. in :Fig 2, thus; -p ermit- The j sts an gir rs -aeefl g ting'said frame 10 tobe used independentlyv of t he p s of h trstle, iitjdesedio a support for s aifold n the process o co str c ionaras esis te as; A plurelitr-S 9f; L PD9 l g ,.-1. R--;-

rights are illustrated at 20, said uprights being mounted on the upperedge of the frame preferably directly over the upright members 11thereof and being of sufficient length to support the floor or ceilingby engagement with the girders thereof, substantlally as shown. Thesupporting uprights to- V gether with the frame 10, it will be noted,

support the entire weight of the mold duringthe pouring and setting ofthe concrete.

The adjustable uprights 15 which extend upwardly from the frame 10 areused merely to gage the distance 'between the floors and to reinforcesaid supporting uprights 20. It will be noted from the drawings that theuprights 15 supportnone ofthe floor weight,

but merely extend upwardly far enough to overlie opposite sides of aplurality of the girders and to embrace the same whereby the trestle,when positioned, is held'against accidental transverse displacement.These adjustable uprights 15 also provide means whereby the supportinguprights 20 may be held in place after they have once been positioned.The means for so holding these uprights 20 in place is shown in thedrawings in the form of members 22 temporarily secured to the beams 20.and 15 by means of nalls, screws or any other suitable fastening means.It is, of course, obvious that other;

means of retaining the supporting beams 20 in position may be provided,if desired.

After the concrete of the floor or ceiling, whichis beingconstructed,,has been poured. and has set, the trestle is removed bymerely removing the temporary retaining means and springing thesupporting uprights 20 out of position. 1 may thenbe quickly lowered bymerely loosof the clamps 1 1-, thus permitting said uprights to slide totheir low- 'ermost positions. However, if desired, as.

*The adjustable uprights 15 ening the bolts 19 above set out. theadjustable uprights 15 together with the clamps 14 may be removedaltogether from the frame 10 by removing the bolts '17. V

It will be noted that the deviceher'ein described, is not limited'toshoring purposes,

but may also be used in the erection of 'scaf ffolding where adjustablesupports'are de-' sired. If scaffolding of the ordinary type,

' wherein the supports are rlgidand non-adjustable'is desired, however,the frame 10,

' after the'trestle has been disassembled, may; i *be used for-thispurpose,"as abovefpointed out. As short'pieces of lumben such as theuprights QOwhich are used in the present device for supporting theweight of the floor or ceilingsbeing constructed, are always availableduring the construction of a buildinggit is obvious'that thenecessityofvjcutv ting long posts or supports; such as was common in themethod 'of' shoring heretofore fpractised, is obviated. It will also benoted as thatit is not necessary in the 'use'of'the trestles hereindescribed to hammer the same out of position after the floor hashardened, thedevice being removed as above describedby merely springingthe supporting uprights 20 out from under the girders.

It 1S1 not desired to limit the invention illustrated and describedherein except where limitations appear in the appended slidable uprightsand adapted to support the weight of a floor during construction."

2.;A device for shoring 'fioors and ceilf ingsn during construction,"comprising a frame, uprights carried 'by 7 said frame, means wherebysald uprights may be moved relative to said frame into contact with thesides of a plurallty of the girders of said floor or ceiling, aplurality. of supporting members mounted intermediate said girders andsaid frameand supported by the latter:

and means for temporarily securing said supporting members to saiduprights.

3. In a temporary buildmg construction,

the combination with a floor. of means'for supporting the samecomprising members arranged end to end in line with the"c'om'-:--

pression thrust caused by the weight being supported, and means'securedto said members temporarily to hold them in line, asa

toggle, during construction, but permitting said toggle to break whenremoved there from thereby shortening the effective length of thecomposite supporting means and permitting ready removalof thehrembers'cbmposing-the same. 41. In a'temporary' building construction,the combination with a'floor, ofmeans for supporting the samecomprisingmembers arranged end-to end in linewith the coinpressionthrust caused by the'weight being 7 supported. and meansadjustably securedito one of said members and temporarily secured tothe-other of; said members to hold said members in line as a toggleduring con struction, but permitting said toggle to break when removedtherefrom.

'5. In a tempo'rarv.

building construction, the'combination with a concrete formfof 'meansfor supporting the same comprising 7 two vertical compression membersarranged end to end, the lowerone of said 'compres-C sion members beinga, permanent portable' structure of fixed hei ht and the'bthe'r of saidcompression members being temporary and cut to length'to meetrequirements, an

auxiliary member adjustably. clamped to' said permanent'member,detachably secured to said temporary'member and of a length" suflicientto securely hold said two members in line as a toggle despite variationsin the length of different temporary members, the detachment of saidauxiliary member permitting said toggle j oint'to break,to permit theremoval of said members.

6. In a temporary building construction, the combination with a concreteform, of means for supporting the same comprising two verticalcompression members arranged end to end, the lower one of said compression members being a permanent portable structure of fixed height andthe other of said compression members being temporary and cut tolengthto meet requirements,'an auxiliary member longer than the maximum lengthof any one temporary member, whereby it may be detachably-secured toatem porary member and extend above andbelow the same, being temporarilyengaged at 7 its upper end by said concrete form and being adjustablysecured ,at its lower end to said permanent member, whereby it mayextend a uniform amount above said temporary member and may hold saidtemporary and said permanent members in alinement. 7 p

7 In a temporary building construct-ion the combination with ahorizontal concete form of a plurality of supporting units therefor,each comprising two vertical compression members arranged end to end,the

lower one of said compression members beng a permanent portablestructure of fixed height and the other of said compression membersbeing temporary and cut to length to meet requirements, an auxiliarymember adjustably secured near its lower end to said permanent memberand extending upwardly along said temporary member and above the latter,being temporarily secured to said temporary member, and meanstemporarily bracing said units in spaced relation.

8. In a temporary building construction,

the combination with a pair of compression 7 members arranged verticallyin end alinement and adapted to support the required weight, of a thinauxiliary member secured thereto, sa1d f compression members being heldagainst movement as a'toggle by said auxiliary member and the latterbeing ar-" ranged in the plane in which said membersv move when saidauxiliary member is withdrawn 1 9. In a temporary building construction,

the combination with a plurality of reotangular frames of fixed height,of a pluv rality of temporary upright membersafor each frame, the lengthof which is variable, said uprlght members being supported on saidframes in vertical alinement therewith,

said frames having'narrow bases whereby,

the weight being supported tends to move sald members and frames out ofalinement, and thm aux liary members arranged in the plane of suchmovement and secured to said members and said frames to resist such.

movement until the completion of the construction.

In witness whereof I hereunto subscribemy name this 7th day of January,A. D.,

- OLAF JOEL VVESTMAN. -Witnesses:

MARTIN LUTHER EAs'rnRnAY, GERTRUDE E. ERICKSON.

10. In a temporary building construction,

